Homework Answers
Q4.
C --> its a base, reacts with HCl to form H2O and a salt
D --> its an acid, reacts with NaOH to form H2O + salt
Q5.
No,
NaOH is a strong base, will react completely with the benzoic acid...
Also the aniline will get deprotonated
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A mixture containing 1, 3, 5-trimcthoxybcnzcnc (A), phenol (B), aniline (C) and 1-naphthoic acid (D) was...
A mixture containing 1,3,5-trimethoxybenzene (A), phenol (B), aniline (C) and 1-naphthoic acid (D) was dissolved in...
A mixture containing 1,3,5-trimethoxybenzene (A), phenol (B), aniline (C) and 1-naphthoic acid (D) was dissolved in dichloromethane. Next two extractions wereperformed first using HCl then with NaOH. Which of the compounds could not beseparated in this procedure. Explain and show the pertinent reaction equation/s.
An unknown mixture (dissolved in diethyl ether) contains only 2 of the following : benzoic acid,...
An unknown mixture (dissolved in diethyl ether) contains only 2 of the following : benzoic acid, phenol, aniline and napthalene. You use the acid-base extraction method and want to identify the 2 compounds in your original mixture. 1) To separate the organic acid you add NaOH and to separate the organic base you add HCl.In both cases these extractions are followed by extractions with water. Why do we add water? Why is this step important? (A clear explanation please). 2)When...
please help! 4. Describe how to separate a mixture of phenol, benzoic acid, and toluene using...
please help!
4. Describe how to separate a mixture of phenol, benzoic acid, and toluene using aqueous NaHCO3, aqueous NaOH, and ether. NaOH can separate the shenol and NaHCO3 can be used for benzoic acid because it dissolved in it. Toluene will be more difficult because it doesn't dissolve in noot or Nation, but the ether can be used for it.
A mixture of compounds containing dimethylamine, phenol, ammonia, and acetic acid is separated using liquid-liquid extraction...
A mixture of compounds containing dimethylamine, phenol, ammonia, and acetic acid is separated using liquid-liquid extraction as follows: Step 1: Concentrated HCl is added followed by draining the aqueous layer. Step 2: Dilute NaOH is added to the organic layer followed by draining the aqueous layer. Step 3: Concentrated NaOH is added to the organic layer followed by draining the aqueous layer. Which compound would you expect to be extracted into the aqueous layer after the addition of dilute NaOH,...
Explain how you could separate benzoic acid and phenol using an acid-base extraction
Explain how you could separate benzoic acid and phenol using an acid-base extraction
A student has a mixture of butanoic acid (liquid) and phenol ( ) (solid). The mixture...
A student has a mixture of butanoic acid (liquid) and phenol ( ) (solid). The mixture is almost (1:1). The pas for both compounds are 4 -5 and 10 respectively. Both compounds are soluble in ether (organic solvent that is insoluble in water). Select the best technique to separate and recover each compounds. Recrystallization. Use strong basic water as a solvent and recover the solid while leaving the liquid behind. Add acid to recover the butanoic acid. Recrystallization. Use ether...
5. The same procedure used in this lab can also be used to separate a 3-component mixture of benz...
Referring to liquid-liquid separation
5. The same procedure used in this lab can also be used to separate a 3-component mixture of benzoic acid, 2-naphthol and naphthalene. Predict the contents of the flasks 1-3 in the following situations (for flasks 1 and 2 after acidification with HCI). [3 points per part 9 points] a) The procedure was performed correctly. b) A student accidentally used 5% NaOH (aq) for the first set of extractions (flask 1) instead of 10% NaHCO3(aq). He...
HW.4 & 5 Liquid-Liquid Extraction HW4. A student wishes to separate a mixture of the two...
HW.4 & 5
Liquid-Liquid Extraction HW4. A student wishes to separate a mixture of the two compounds shown below. They intend to use liquid-liquid extraction to do so. NH Aniline Naphthalene A) Aniline has an amine functionality and naphthalene is purely a hydrocarbon compound. An amine functional group is acidic, basic, or neutral? asic B) Given your answer to A, fill in the missing portions of the diagram that describe the process of the separation for aniline and naphthalene. Aqueous...
Let's assume you have a mixture of equal parts benzoic acid, sand and toluene that are...
Let's assume you have a mixture of equal parts benzoic acid, sand and toluene that are intimately mixed together (the crude material is a mixture of solid and liquid). Propose a procedure to separate these three components using any of the chemicals commonly available (you've used all of the "common" chemicals in the lab by now) in the organic chemistry teaching laboratories and observing the typical limitations with the instruments and techniques (such as not being able to distill or...
3. A crude nonacidic product mixture dissolved in diethyl ether contains acetic acid. Describe an extraction...
3. A crude nonacidic product mixture dissolved in diethyl ether contains acetic acid. Describe an extraction procedure that could be used to remove the acetic acid. b. When the two layers form during an ether/water extraction, what would be an easy, convenient way to tell which layer is which if the densities were not available.
please help!
4. Describe how to separate a mixture of phenol, benzoic acid, and toluene using aqueous NaHCO3, aqueous NaOH, and ether. NaOH can separate the shenol and NaHCO3 can be used for benzoic acid because it dissolved in it. Toluene will be more difficult because it doesn't dissolve in noot or Nation, but the ether can be used for it.
A mixture of compounds containing dimethylamine, phenol, ammonia, and acetic acid is separated using liquid-liquid extraction as follows: Step 1: Concentrated HCl is added followed by draining the aqueous layer. Step 2: Dilute NaOH is added to the organic layer followed by draining the aqueous layer. Step 3: Concentrated NaOH is added to the organic layer followed by draining the aqueous layer. Which compound would you expect to be extracted into the aqueous layer after the addition of dilute NaOH,...
A student has a mixture of butanoic acid (liquid) and phenol ( ) (solid). The mixture is almost (1:1). The pas for both compounds are 4 -5 and 10 respectively. Both compounds are soluble in ether (organic solvent that is insoluble in water). Select the best technique to separate and recover each compounds. Recrystallization. Use strong basic water as a solvent and recover the solid while leaving the liquid behind. Add acid to recover the butanoic acid. Recrystallization. Use ether...
Referring to liquid-liquid separation
5. The same procedure used in this lab can also be used to separate a 3-component mixture of benzoic acid, 2-naphthol and naphthalene. Predict the contents of the flasks 1-3 in the following situations (for flasks 1 and 2 after acidification with HCI). [3 points per part 9 points] a) The procedure was performed correctly. b) A student accidentally used 5% NaOH (aq) for the first set of extractions (flask 1) instead of 10% NaHCO3(aq). He...
HW.4 & 5
Liquid-Liquid Extraction HW4. A student wishes to separate a mixture of the two compounds shown below. They intend to use liquid-liquid extraction to do so. NH Aniline Naphthalene A) Aniline has an amine functionality and naphthalene is purely a hydrocarbon compound. An amine functional group is acidic, basic, or neutral? asic B) Given your answer to A, fill in the missing portions of the diagram that describe the process of the separation for aniline and naphthalene. Aqueous...
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